Provider comparison · Updated 12 Oct 2026
Anthropic vs OpenAI
18 models vs 44 models
OpenAI is cheaper at the median: $2.00 against $5.00 per 1M input tokens across paid models, about 2.5× less. Its cheapest paid model, gpt-oss-20b ($0.02), compares with Claude Haiku 5.5 ($0.10) at Anthropic. Anthropic lists 18 models; OpenAI lists 44 models.
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Cite this page
ModelsAtlas. “Anthropic vs OpenAI”. Retrieved 12 Oct 2026. https://modelsatlas.com/compare-providers/anthropic/openai
At a glance
Standard tier, paid models · highlighted = better
Anthropic
OpenAI
Models listed
18
44
Cheapest input / 1M
$0.10
$0.02
Median in / out
$5.00 / $25.00
$2.00 / $10.00
Highest input / 1M
$15.00
$30.00
Largest context
1M
1.05M
Batch-tier models
15 of 18
20 of 44
Open-weight models
0
8
Free models
0
0
Vision models listed
0
3
Audio models listed
0
4
Costs for real workloads
Cheapest paid model from each provider that fits the job · monthly
Derived from standard-tier prices, 30 days. “Fits the job” means the context window holds the prompt and reply. Excludes batch and caching.
Cheapest model for each capability
Input / output per 1M
| Capability | Anthropic | OpenAI |
|---|---|---|
| 1M context | Claude Haiku 5.5 $0.10 / $0.50 | GPT-6 Luna $0.10 / $0.50 |
Line-up by price tier
Paid models · input per 1M
| Tier | Anthropic | OpenAI |
|---|---|---|
| Flagship $3+ | Claude Opus 4.1 $15.00 Claude Opus 4 $15.00 Claude Fable 5.1 $10.00 Claude Fable 5 $10.00 Claude Opus 5 $5.00 +8 more | GPT-4 $30.00 o1 $15.00 GPT-6 Astra $10.00 GPT-4 Turbo $10.00 GPT-5 Image $10.00 +4 more |
| Mid $0.50–$3 | Claude Haiku 4.5 $1.00 Claude Sonnet 5 $2.00 Claude Sonnet 5.5 $2.00 | GPT-3.5 Turbo $0.50 o3 Mini High $1.10 o4 Mini $1.10 o4 Mini High $1.10 GPT-5 $1.25 +16 more |
| Budget under $0.50 | Claude Haiku 5.5 $0.10 | gpt-oss-20b $0.02 gpt-oss-120b $0.03 gpt-oss-safeguard-20b $0.08 GPT-6 Luna $0.10 GPT-5.6 Luna $0.20 |
| Open weights any price | None listed | None listed |
Questions
Is Anthropic or OpenAI cheaper?
OpenAI at the median: $2.00 against $5.00 for Anthropic per 1M input tokens. Median is across each provider's paid standard-tier models, so a provider with many small models can look cheaper than its flagship is.
Which provider has more models?
OpenAI lists more: Anthropic 18, OpenAI 44. Counts are models with a page in our catalogue.
Do both offer batch pricing?
Anthropic: 15 models list a batch tier. OpenAI: 20 models list a batch tier. Where a model lists both, batch is a median 50% of standard for Anthropic and 50% for OpenAI.
Which has the larger context window?
OpenAI has the larger: Claude Fable 5 (1M tokens) at Anthropic, GPT-5.4 (1.05M) at OpenAI.
Does either provider offer open-weight models?
Anthropic: none marked open-weight. OpenAI: 8 open-weight models.
Does either have free models?
Anthropic: none listed at no per-token charge. OpenAI: none.
Browse more providers
Keep going in your AI
Opens with this page as the source. We add nothing else to the prompt.
- Is Anthropic or OpenAI cheaper?
- Which provider has more models?
- Do both offer batch pricing?